Improvement in sockets for lock-spindles



@met (niita GLLAGHER, OF BOSTON',v MASSACHUSETTS.

Letters Patent No. 108,343, dated October 18, 1870; antedatcd October 15, 1870.'

IMPRQVEMENT IN SOC'KETS FOR LOCK-SPINDLES.

The Schedule referred to in these-Letters Patent and making part of the same.

To all whom it may concern Be it known that I, OWEN GALLAGHER, of Boston, 4in the county of Suiolk and State of Massachusetts, have invented a certain new and useful Improve ment in Spindles for Locks, 85o., of whichV the following is a complete specification.

Nature and Object of the Invention.

The nature of my invention consists- Y First, in combining, with the spindle of the lock, one or more water-ways, through which a stream of water iiows from and to some suitable receptacle..

Second, in making the hub `in the form of a double truncated cone, being largest in the middle.

The object of my invention being- First, to vrender the spindle proof against the process of softening by heat, and

Second, to prevent the hub troni being either driven in or drawn out.

Description of Drawings.

Figure l is a perspective view from the inside of a safe. door, showing the inner end of the spindle and they water-tank, and a part of the water-ways.

' Figure 2 is a vperspective view of the spindle.

Figure 3 is a section through the whole.

General Description.

v A B gs. 2 and 3 represent the spindle, made in any 4desired size and form, of hardened steel.

This spindle is provided with an annular groove, o d, as shown.

vWhen the spindle is in the hub G D C D', as shown in iig. 3, the annular groove c [l forms a water-Way around the spindle, and is connected, by means of the pipesH and H', to the water-tank W, the pipes H and H! being closed at their point of contact with the spindle by fusible plugs, the whole being so arranged that upon the application of heat to the vspindle or hub, the fusible plugs will be lnelted, and thus establish a free' communication between the grooves c d and the `water-tank, so that it will he impossible to heat the spindle B or hub O C' sutciently to draw the temper so long as there is any wat-er left in the tank YV, which would be an indefinite time'; for, as fast assteam wou-ld be formed by heat from the spindle, it would pass upward through the pipe H into the upper part of the tank W, and there being condensed, would again form water.

The upper part of the tank may be provided with any suitable device for allowing the escape of steam in case more is formed than can be readily condensed.

The hub G D' is madein the form of two cones, with lthe larger bases in contact at the dotted line E E', iig. 3, so that when it is placed between the two plates or series of plates, K K', it can neither be driven in nor pushed out.

- If desirable, this double cone-shaped plug may consist of a series of short cylinders, increasing in diameter from either end toward the center of the hub, as represented in fig.

0 latins.

l claim- 1. rlhe spindle A B, when provided with one 0r more water-ways, c d, arranged to serve,`in connection with a water-receptacle, for the purpose set forth.

2. The combination of the double eone-shapedohub C D C D', with the plates or series of plates K K', and the spindle A B, substantially as described, and for the purpose set forth.

Witnesses: OWEN GALLAGHER.

FRANK G. PARKER, Jas'. S. GoNAN'r. 

